Abstract
Use of hot rolled steel member in structures is a well known practice in construction industry. But, in case of light and moderate loaded structures, the usage of hot rolled steel section leads to overweight and uneconomical. To overcome this deficiency a new form steel known as cold formed steel (CFSS) has come into practice. Cold Formed steel product such as Z-purlin has been commonly used in metal building industry more than 40 year in unites state due to their wide range of application, economy, ease of fabrication and high strength-to-weight ratios. Z- purlins are predominantly used in light load and medium span situations such as roof systems. Literature review details the review of the literature on local buckling, torsional bucking buckling, Distortional buckling, Channel section with Stiffened Lip and Channel section with unstiffened Lip formed members. For tensile test a test specimen of Z-section fabricated according to the IS1608-2005. The design of cold formed section is also explained with numerical example.
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